Cooling system for working fluid of machine tool and method for using thereof

Abstract

A cooling system for working fluid of machine tool is assembled with a temperature sensing and controlling device for controlling the operation modes of a cooling host thereof. The cooling host is a commercial available cooling host. The cooling host delivers refrigerants to a heat exchanger via a refrigerant circulation pipeline so at to cool down the working fluid, and the cooling host can be freely replaced by any commercial available cooling host based on the damage condition thereof. Based on this, the cooling system according to the present invention is capable of being assembled to various machine tools and capable of using various commercial available cooling hosts for the operation of the system.

1 . A cooling system for working fluid of machine tool, comprising a cooling host and a temperature sensing and controlling device being assemblable in a machine tool, wherein the temperature sensing and controlling device is provided to detect a temperature parameter of the machine tool;
 the cooling host comprising a heat exchanger and a refrigerant circulation pipeline, the heat exchanger connected to a working fluid circulation pipeline connectable with the machine tool, and the cooling host being turned on or off, or operation modes of the cooling host being adjusted, according to the temperature parameter of the temperature sensing and controlling device, and the cooling host being a commercial available cooling host;   whereby, the working fluid in the machine tool is flowed into the heat exchanger via the working fluid circulation pipeline, and the cooling host delivers refrigerants to the heat exchanger through the refrigerant circulation pipeline, thereby allowing the temperature of the working fluid in the working fluid circulation pipeline to exchange heat with the refrigerant circulation pipeline via the heat exchanger, and the cooling host can be freely replaced by any commercial available cooling host based on the damage condition thereof.   
     
     
         2 . The cooling system for working fluid of machine tool as claimed in  claim 1 , wherein the cooing host is an outdoor host of an air conditioner. 
     
     
         3 . The cooling system for working fluid of machine tool as claimed in  claim 2 , wherein the cooing host is one of a constant-frequency outdoor host and a variable-frequency outdoor host. 
     
     
         4 . The cooling system for working fluid of machine tool as claimed in  claim 1 , wherein the temperature sensing and controlling device includes a first temperature sensor and a controller, the first temperature sensor detects the temperature of the working fluid in the working fluid circulation pipeline, the controller controls the cooling host according to the temperature detected by the first temperature sensor. 
     
     
         5 . The cooling system for working fluid of machine tool as claimed in  claim 1 , wherein the temperature sensing and controlling device includes a first temperature sensor, a second temperature sensor and a controller, the first temperature sensor detects the temperature of the working fluid in the working fluid circulation pipeline, and second temperature sensor detects the temperature of the machine tool and/or the environmental temperature, the controller compares the temperature detected by the first temperature sensor with that detected by the second temperature sensor to control the cooling host according to a temperature difference between the temperature detected by the first temperature sensor and that detected by the second temperature sensor. 
     
     
         6 . The cooling system for working fluid of machine tool as claimed in  claim 4 , further comprising a fluid sensing device connected to the controller to detect circulation states of the working fluid in the working fluid circulation pipeline, wherein when the fluid sensing device senses that the circulation of the working fluid in the working fluid circulation pipeline is ceased, the controller stops the operation of the cooling host, the operation of the machine tool, or simultaneously stops the operations the cooling host and the machine tool. 
     
     
         7 . The cooling system for working fluid of machine tool as claimed in  claim 5 , further comprising a fluid sensing device connected to the controller to detect circulation states of the working fluid in the working fluid circulation pipeline, wherein when the fluid sensing device senses that the circulation of the working fluid in the working fluid circulation pipeline is ceased, the controller stops the operation of the cooling host, the operation of the machine tool, or simultaneously stops the operations the cooling host and the machine tool. 
     
     
         8 . The cooling system for working fluid of machine tool as claimed in  claim 4 , wherein the machine tool has a predetermined temperature parameter, the controller compares the temperature of the machine tool detected by the temperature sensing and controlling device with the predetermined temperature parameter to control a cooling ratio of the cooling host. 
     
     
         9 . The cooling system for working fluid of machine tool as claimed in  claim 5 , wherein the machine tool has a predetermined temperature parameter, the controller compares the temperature of the machine tool detected by the temperature sensing and controlling device with the predetermined temperature parameter to control a cooling ratio of the cooling host. 
     
     
         10 . The cooling system for working fluid of machine tool as claimed in  claim 1 , wherein the refrigerant circulation pipeline in the heat exchanger is stacked with the working fluid circulation pipeline in the heat exchanger. 
     
     
         11 . The cooling system for working fluid of machine tool as claimed in  claim 1 , further comprising a storage tank connected to the working fluid circulation pipeline to store the working fluid, wherein the heat exchanger is assembled in the storage tank. 
     
     
         12 . A method for using the cooling system for working fluid of machine tool as claimed in  claim 1 , comprising:
 (a) starting the machine tool to allow the working fluid flowing into the working fluid circulation pipeline;   (b) detecting the temperature parameter of the machine tool by the temperature sensing and controlling device to start the cooling host to allow the operation of the refrigerant circulation pipeline of the cooling host;   (c) allowing the working fluid in the working fluid circulation pipeline to undergo heat exchange with the refrigerant circulation pipeline in the heat exchanger; and   (d) allowing the temperature sensing and controlling device to control the operation of the cooling host or to loop the (c) step based on the temperature of the working fluid in the (c) step.